Lock



Oct. 17, 1939. H. a'MoNlNGER LOCK Filed Aug. 4, 1936 2 Sheets-Sheet lAll INVENTolg. /Yelzr 21% eg:

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LOCK

Filed Aug. 4, 1936 2 Sheets-Sheet 2 INVENTOR,

A TTORNEY- Patented Oct. 17, 1939 .Unirse smits PATENT OFFICE LOCK HenryE. Moninger, Philadelphia, Pa.

Application August 4,

11 Claims.

This invention relates to improvements in locks and it is particularlyuseful for pin tumbler cylinder locks having the usual rotatable keyplug for withdrawing the customary spring actuated door latch.` When thekey is inserted in the key Y plug, the tumblers are operated to breakposition tov permit the key plug to be turned and withdraw the latch bymeans of the roll back arm or cam which is attached to the key plug.

One of the objects of the invention is to provide a lock which hasself-contained therein, means for securing the lock cylinder in the lockcasing.- Heretofore the locks have been secured by such means as a screwbolt, which makes unauthorized removal of the lock a relatively simplematter. By my invention it is, for all practical purposes, impossible toeffect an unauthorized removal of the lock.

Another object of the invention is to provide the lock, as aself-contained part thereof, with shut-out means whereby the lock can berendered temporarily inoperable by anyone other thanA thefholder of thekey by means of which the shut-out is made effective or ineffective.

'55 `In the preferred form of my invention, I proposit'o combine boththe improved lock securing means and the shut-out means in a self-contaned lock unit.

`More specifically, it is an object of my inven- 30TV tion to provide aslidable bar or bolt as part of the lock, which bar functions to securethe lock cylinder in the lock casing, preventing the unauthorized`removal of the lock; and to provide ashut-out, which is slidable in thesaid bar and' is movable to a position making it impossible to operatethe roll back arm.

The keys employed when the foregoing features are applied to a standardform of key plug, tumbler lock, vmay be described as follows: First,

40"' the key that operates the slidable bar which locks or secures thelock cylinder in .the lock casing; second, the key which operates theshut-out to prevent the functioning of all other keys otherwiseoperable; third, the usual guest or changeV key;r and. fourth, the usualvariety of master keys;

'Ilaccomplish the foregoing, together with such other objects andadvantages as will hereinafter appear or are incident to my invention,by means of the lock mechanism shown in the accompanying drawings,wherein:

Figure 1 is an elevational view of a portion of the interior of the lockreceiving casing or casting,tshowing. the' lock cylinder attachedthereto and with the locking bar in its protracted posi- 1936, SerialN0. 94,132

(Cl. 'l0- 341) tion, operable to prevent unauthorized removal of thelock from the casing;

Figure 2, a sectional view taken on the line 2-2 of Figure 1;

Figure 3 is an end view showing the shutr. outl block inl position toprevent the use of the guest and the usual master keys;

Figure 4 is a View corresponding with Figure 3 but with the roll backarm removed to more clearly show how the shut-out block preventsoperation of the rollY back arm;

Figure 5 is a longitudinal sectional View through the axis of the lockcylinder and key plug, with a guest or change key in place;

Figure 6 is a fragmentary sectional view through the axis showing partof an inserted special key which operates the "shut-out block, said.lkey having formed at its cam end an additional bit of an. elevation toadjust the parts to be operated; 20

Figure '7 is a fragmentary sectional view through the axis of the lock',showing part of a special key which operates the slidable bar forretaining the lock' cylinder in the casing, said key having formed atits cam end, an additional bit of an elevation to adjust the parts to beopera'ted;

Figure 8' is a section taken on the line 8 8 of Figure 5- showing thisslidable locking bar in its protracted, operative locking position;

Figure 9 is a view corresponding to Figure 8 but showing the shut-outblock moved to its operative or shut-out position where the usual guestorv master keys become inoperative but with the locking bar in itsprotracted effective locking position..

Figure 10 is' a sectional view showing the lock cylinder sliding barretracted and the special key (in section) which operates the bar, stillin place;

Figure l1 is a perspective view of the lock cylinder locking bar;

Figure 12 is a perspective view of the shutout block;

Figure 13- is a perspective view of a duplex pin tumbler carried in theshut-out block;

Figure 14 is a sectional view showing the lock cylinder sliding bar ofFigure 1 applied to a lock of the sleeve type; and

Figure 15 is a section taken on the line l5-I'5 of Figure 14:,` butdrawn on a smaller scale.

Referring now toy the drawings the reference numeral l designates thecasing member adapted to enclose the lock mechanism, which casing isfitted into an opening in the front edge of the door. 55

Yand 5).

The cover for the casing isindicated at 2. The internally threadedopening of the casing is shown at 3 and into this opening the lockcylinder 5 which has external threads 4, is screwed. On the innerportion of the casing I are a pair of parallel integral, spaced lugs 6and 'l adapted to provide a space 8 receiving the end of sliding lockingbar 9.

Projecting from the inner end of the lock cylinder 5 is the usual bossor ring 5 encircling the key plug bore 282 (see Figures 2 and 4).Directly above and transecting the top of this ring down to the depth ofits inner circumference, is a transverse groove 8 into which the lockingbar 9 is adapted to be snugly received. The bottom of the groove 8provides a substantial support or bearing surface not only for the bar 9but also for the plate 2D of the shut-out block indicated as a whole bythe reference numeral |15.

It will be clear from the drawings that when the sliding bar 9 isoperated so that its work end enters space 8 between the lugs 6 and 'I,it effectively prevents the lock cylinder 5 from being unthreaded andremoved from the casing I.

Reference will now be made to the means by which the bar 9 may beoperated. Formed within the bar 9 is a recess I I (see Figures 8-11inclusive) and bored through the upper wall of this recess and extendingbetween the surfaces 9' and ID, are two parallel openings or holes I2and I3, connected laterally by the narrow channel i4 formed by the twooppositely extending projections I4 (see particularly Figure 11).. Y

The shut-out block l5 consists of two major portions I9 and 20, the parti9 projecting into and being slidable in .the recess I I. The portion 20moves inthe recess 2I formed in the under face of the bar 9 and is oi agreater width than the locking bar so that the part 29.of the plate 20projects laterally from a side face of the bar. Twov holes I6 and I'I,corresponding to the holes I2 and. I3, are bored in the top of the partkI9 of the shut-0u block, these two holes also being connected laterallyby the narrowchannel I8 formed by the projections I8". These holes I6Vand II together with the connecting channel I8 open downwardly into anelliptically formed bottomless chamber or recess 38 in the lower* partof the portion I9 and the plate 20 (see particularly Figure 9). lThiselliptical recess houses the duplex pin tumbler 22 shown in Figure 13,when said tumbler is normally at rest upon the upper end of thespecialpin tumbler 3l (see Figures 8 The recess 38 also provides room inthe base of block I5 for the upward entrance of this pin tumbler when itis caused to lift and displace the duplex pin tumbler 22 (see Figure10).

The duplex pin tumbler has two cylindrically formed parts or pinsections 23 and 24 connected by the neck 25. vThis tumbler is normallycarried in the block I5 and when the holes i9 and I1 are in registrywith the holes I2 and |13, the duplex pin tumbler maybe moved to lockthe bar 9 and the shut-out block togethen The bottom of the pin tumbleris formed into a concave surblock I5 is in its operative orvshutting-out position as shown in Figures 3, 4 and 9. When this occursthe roll back arm is held and can no longer engage and retract the part29 of the latch bolt 292, thus forestalling an attempt to operate thelock unauthorizedly.

3i designates the tumbler chambers in the cylinder 5 in which the pintumblers 32 and the actuating springs 33 are located. 34 are the usualantifriction balls which contact with the bits of the keys. The key plug28 is formed with the usual pin tumbler openings 35 in which are locatedtlie pin tumblers 36. These parts constitute the conventional pin andtumbler construction, with the exception that a slight modication ismade in the tumbler chamber 3I and its pin tumbler Lil'. rihis pintumbler 41 s provided with a convex lower end 4T which bears upon thefiat upper end of the pin tumbler 36 in the tumbler chamber 35', asshown in Figures 5, 6 and '7. With the oriiices of the chambers 3| and35 registering, the tumbler 41 under the pressure of spring 33"canpartly descend from chamber SI into chamber 35 as shown in Figures 6and 7, or until it is stopped by contacting with tumbler 35 when thelatter is positioned by a bit @l2 of either the special key 42 or thekey 43, at 4 which time only the conve-x end of tumbler 41 can enter theoriiice of chamber 35. The parts as so adjusted then become a locatingdetent by means of which the operator knows when the key is in positionto be withdrawn. It will be manifest that when the Ykey plug is rotated,the upper rim 35 (see Fig. 7) will press against the convex end i andforce tumbler 41 upward until its convex end 4l is bearing on thesurface of the key plug 29 and upon which it will then ride. The tumbler4'! operates` in the usual way to pin the key plug against rotationwithin the cylinder. To v guest or change key 35S-so that either itsconvex lower end 47 is raised flush with the surface of the key plug(see Figure 5) or, its flat upper end is so aligned. The position ineither instance depends upon the elevation Vof this particular bit ofthe inserted change key. Y Y

Formed at the top of the rearmost portion of the key plug bore 282 is arectangular recess, extending longitudinally forward. Each side of therectangular recess is indented with a U shapedrnotch 31 and 312,ktransversely opposite and in line with the chamber 28', in which is 10-cated the pin tumbler 31 (see Figure 8). These notches are of the samewidth as the diameter of the chamber 2S and of such depth as to permitof the needed arcuate movement of the tumbler 3l, when it is used toactuate either the bar 9 or the block I5.

The key plug 28 is provided with the'usual key-- normally 4rest before akey is inserted. 4I is a` slidable plate which closes the upper ends ofthe openings of the tumbler chambers. 45 designates the innermosttumbler chamber of the cylinder 5 in which the retaining, pin tumbler 44and the actuating spring 332 are located. The pin 44 is employed toretain the sliding bar 9 in either a protracted or retracted position;and it further acts to retain the shut-out block in either its operativeor its inoperative poistion.

The operation lof the device is as follows:

`To condition the unit for screw threading into the lock. case, if theparts are Vnot already in the position of Figure 10, the procedure is asfollows: the key 42 is inserted' and the bit 42 elevates the tumbler 31which in turn elevates the duplex pin tumbler 22 until the upper surfaceof the latter is flush with the top surface of the locking bar,

at which time the lower face of tumbler 44 will also be iiushwith theupper surface of the locking bar. The key can now be turned clockwiselooking at the face of the lock, which brings the locking bar, theshutout block and the associated partsy to the posi-tion shown in Figure10. 'I'he key 4-2 is now turned counterclockwise until the arrestingpressure of the detent tumbler 41 is felt, whereupon the key may bewithdrawn. When this occurs the duplex pin tumbler and the pin 44- movedownwardly under the iniiuence of the spring 332 and the locking bar andshut-out block will be locked together, with the locking bar inretracted position. The lock may now be screwed in place.

Toprevent its unauthorized removal from the door, the key 42I is usedand is now turned counterclockwise, looking at they face of the lock.This can be done because when the key is inserted all parts are broughtto the break position. This counterclockwise movement causes the lockingend of the locking bar to move into the space and also bringsl thesh-ut-out block tothe position shownin Figu-re 8. The key is now rotatedclockwise to middle position, when the detent 41 is felt and the key iswithdrawn. The position of the parts is now as represented in Figures 1and 8. When the key is withdrawn the pin 44 descends suiiic'iently tolock the bar 9 with respect to the cylinder case and also the shut-outblock with respect to the bar 9. In this position it will be seen thatthe pin 30 clears the projecting portion 20" of the shut-out block andthe roll backA arm can be swung all around so as to engage the member29', to pull back the latch.

Either the usual guest key or the master key can now be used. It will benoticed for example on inspection of Figure 5, that the guest key is tooshort to in anywi'se affect the tumbler pin 31 and the cylinder and eachother. f' the shut-out block shown in Figures 9, 3 and 4,

the parts associated therewith. Such is the case also with the usualmaster key.

Assuming now that an authorized person desires to operate the shut-outandr make the usual guest or change key and the usual master keyineffective, the procedure is as follows: Key 43 is now inserted and thebit at its cam end lifts pin 31 to the position shown in Figure 6 atwhich time the upper face of the duplex pin tumbler is flush with thesurface 9 and the shut-out block is thus in break position with respectto the bar, the bar, however, still being locked by the pin 44. Key 43is now turned clockwise, looking at the Yface of the lock, which shiftsthe shut-out block into the position shown in Figure 9 and Figures 3 and4. 'Ihe key is then turned to neutral position and withdrawn Vwhereuponthe duplex pin tumbler and the pin 44 sink, keeping the bar 9 and theshut-out block in locked position with In the position of duplex pintumbler is out of registry and cannot move upwardly (see Figure 9).

To recondition the lock for use by either the guest key or the masterkey or the key 42, the operator reinserts key 43 which brings the topsurface of the duplex pin tumbler flush with the surface 9', i. e., tobreak position of the shut-out block. The shut-out block may now bemoved back to the position shown in Figure l or in Figure 8, the keybrought back to neutral and withdrawn. The locking bar is still engagedin the recess 8 and the lock cannot be removed but, since part 20 isagain out of the path of movement of the pin 30, the guest key or themaster keyl may be operated as well las the key 42, because once morethe duplex pin tumbler has been brought into registry with the holes I2and i3. If it is desired to remove the lock the key 42 is used toretract the bar 9.

It will be seen that the means for securing the lock againstunauthorized removal and the shutout means are very simple inconstruction and operation and the cost of the same is partly offset bythe elimination of the usual screw bolt for screwing the lock in placeagainst unauthorized removal. This simple construction avoids thenecessity of a second set of tumbler chambers and associated parts inone previous form of shutout mechanism (see Patent No. 1,190,686) or themore familiar arrangement of rotatable rings or sleeves (see for exampleNo. 1,170,481 to Coney).

With respect to the operation of the shut-out lock and particularly themovement of the shutout block to position by the key t3, the followingis to be observed. It might be thought that the key after having beenoperated to move the parts to the position shown in Figure 9, wouldreturn the shut-out block as the key is being reversed in rotation tobring it to neutral position. It is to be noted, however, that the lowerend of the pin 44 is just slightly below the top of the shut-out blockand operates as a detent for the locking block until shortly after thereverse movement has begun to be imparted to the key. Once the key is inmotion with respect to the duplex pin tumbler, it will continue itsmotion without frictionally carrying the shut-out block back from itsoperative position. Likewise, the same conditions eX- ist when turningthe key 133 clockwise to withdraw aiter it has been used to shift theshut-out block to inoperative position.

Referring now to Figures 14 and 15, I have therein illustrated theapplication of the locking bar to a lock of the rotatable sleeve type.In this construction, when the special key 5I is inserted, the tumblersare brought to break position insofar as the sleeve 48 and the cylinder5a are concerned but the sleeve 48 is locked with respect to the keyplug 23a. Thereby, when the key 5i is turned, the sleeve :i8 rotateswith the key plug and through the medium, of the pin 31a fitting intothe recess 38a in the locking bar 9a, the locking bar operated either toits protracted or retracted position. In this case, the cylinder isprovided with a groove 8a to receive the locking bar 9a. As before thekey plug has a keyway 39a and a ledge lilla. The customary roll back armis shown at 21a. lThe cylinder has the usual tumbler chambers 3 la,tumbler pins 32a and springs 33a; the key plug also has its usualchambers 35a, pins Bia and balls 34a. The sleeve has correspondingchambers.

It will be noted that because of the compact disposition of the partsthey can be applied to standard types of lock cylinders of standardlengths. It will also be understood that my improvements may be readilyapplied to other forms of locks.

I claim:

l. In a lock, the combination with the rotatable key plug and its latchoperating means, of a slidable locking bar adapted in its protractedposition to engage with an adjacent part to prevent removal of the lock,means associated with the plug to be key-actuated to effect movement ofthe locking bar when the plug is rotated, and a slidable shut-out membermovable into and out of the path of movement of the latch operatingmeans and movable independently of the locking bar.

2. In a lock, the combination with the rotatable key plug and its latchoperating means, of a slidable locking bar adapted in its protractedposition to engage with an adjacent part to prevent removal of the lock,means associated with the plug to be key-actuated to effect movement ofthe locking bar when the plug is rotated, and a slidable shut-out membermovable into and out of the path or' movement of the latch operatingmeans and movable independently of the locking bar, the same means whicheffect movement of the locking bar effecting movement of the shutoutmember.

3. In a lock, the combination with the rotatable key plug and its latchoperating means, of a slidable locking bar adapted in its protractedposition to engage with an adjacent part to prevent removal of the lock,means associated with the plug to be key actuated to effect movement ofthe locking bar when the plug is rotated, and a slidable shut-out membermovable into and out of the path of movement of the latch operatingmeans, said shut-out member being housed in the locking bar and capableof lost motion with respect thereto.

4. In a lock, the combination with the rotatable key plug and its latchoperating means, of a slidable locking bar adapted in its protractedposition to engage with an adjacent part to prevent removal of the lock,means assoicated with the plug to be key-actuated to eect movement ofthe locking bar when the plug is rotated, and a slidable shut-out membermovable into and out of the path of movement of the latch operatingmeans, said shut-out member being housed in the locking bar and capableof lost motion with respect thereto, and being operated by the samemeans which effect movement of the locking bar.

5. In a lock, the combination with the rotatable key plug and its latchoperating means, of a slidable locking bar adapted in its protractedposition to engage with an adjacent part to prevent' removal oi thelock, means associated with the plug to be key-actuated to effectmovement of the locking bar when the plug is rotated, a slidableshut-out member movable into and out oi the path of movement of thelatch operating means, said shut-out member being housed in the lockingbar and capable of lost motion with respect thereto, said bar andshut-out'member each having a duplex tumbler pin chamber adapted to Vbebrought into and out oil registry, and a duplex tumbler pin normallycarried in the shut-out member adapted to lock the bar and theshut-outmember together when key-actuated.

6. In a lock, the combination of a lock cylinder, and a key plug and itslatch operating means, of a locking bar slidable in a groove in the lockcylinder, the said lock cylinder being provided with such groove, ashut-out member housed in said bar and slidable with respect thereto andslidable therewith, and tumbler mechanism key-actuated to operate thebar and the shut-out member independently of one another or together.

7. In a lock, the combination of a lock cylinder, and a key plug and itslatch operating means, of a locking bar slidable in a groove in the lockcylinder, the said lock cylinder being provided with such groove, ashut-out member housed in said bar and slidable with respect thereto andslidable therewith, and tumbler mechanism key-actuated to operate thebar and the shut-out member independently of one another or together,said tumbler mechanism in certain positions locking the bar to the lockcylinder and the shut-out member to the bar, locking the bar andshut-out member together, and aording a break between the bar and saidmember.

8i. In a lock, the combination with the lock cylinder and key plug andits latch operating means, oi a slidable shut-out member housed entirelywithin the cylinder to one side of the plug, and tumbler mechanismadapted tofbe key-actuated to engage said member to effect movement ofthe shut-out member when the plug is turned.

9. In a lock, the combination with a lock cylinder and a key plug andits latch operating means, oi a slidable locking bar, a shut-out memberhoused in said bar and slidable with respect thereto and slidabletherewith, and a duplex tumbler pin housed within said shut-out member,said locking bar having a duplex tumbler receiving chamber, said tumblerYpin 'being movable in said duplex chamber when the duplex chamber andthe duplex pin are brought into registry.

10. In a lock, the 'combination of ar lock cylinder, a key plug and itslatch operating means, a slidable locking bar carried in the cylinder toone side of the key plug, a shut-out member slidable in said bar, atumbler adapted to lock the shut-out member andthe bar with respect tothe cylinder and each other, and another tumbler key-actuated to rendersaid rst tumbler ineffective to lock the shut-out member, said firsttumbler projecting slightly into the shut-out member to act as atemporary detent when a key is inserted for actuation of the shut-outmember.

l1. In a pin-tumbler lock, apin tumbler cylinder having a screw-threadedouter surface, a lock case adapted to be mounted within a closure andprovided with a screw threaded opening into which said cylinder isthreaded and a slot in communication with said opening, a dog mounted insaid cylinder for movement transversely thereof and adapted to beprojected into and retracted out of said slot, and key-operated,pin-tumbler controlled means for projecting and retracting said dog intoand out of said slot.

